diff --git a/wallet/src/main/java/net/taler/wallet/payment/PromptPaymentComposable.kt b/wallet/src/main/java/net/taler/wallet/payment/PromptPaymentComposable.kt
index 3663d1d3..9fb20a0e 100644
--- a/wallet/src/main/java/net/taler/wallet/payment/PromptPaymentComposable.kt
+++ b/wallet/src/main/java/net/taler/wallet/payment/PromptPaymentComposable.kt
@@ -58,6 +58,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableLongStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
@@ -71,6 +72,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import net.taler.common.Amount
 import net.taler.common.ContractChoice
@@ -83,6 +85,7 @@ import net.taler.common.ContractTokenFamily
 import net.taler.common.Exchange
 import net.taler.common.Merchant
 import net.taler.common.TalerUtils
+import net.taler.common.Timestamp
 import net.taler.lib.android.base64Bitmap
 import net.taler.wallet.R
 import net.taler.wallet.cleanExchange
@@ -182,8 +185,12 @@ fun PromptPaymentComposable(
             }
         }
 
+        val timeToPay = rememberTimeToPay(contractTerms.payDeadline)
         BottomButtonBox(Modifier.fillMaxWidth(),
-            heading = if (contractTerms is ContractTerms.V0) { ->
+            heading = if (contractTerms is ContractTerms.V0 || timeToPay != null) { ->
+                timeToPay?.let { TimeToPay(it) }
+
+                if (contractTerms !is ContractTerms.V0) return@BottomButtonBox
                 val choice = status.choices.firstOrNull()
                     ?: error("no v0 choice")
 
@@ -247,6 +254,40 @@ fun PromptPaymentComposable(
     }
 }
 
+/** Orders due within this time show a countdown, as in the iOS wallet. */
+private const val TIME_TO_PAY_WARNING_MS = 5 * 60 * 1000L
+
+/**
+ * Milliseconds left until the payment deadline once it is less than
+ * [TIME_TO_PAY_WARNING_MS] away, updated every second; null before that.
+ */
+@Composable
+private fun rememberTimeToPay(payDeadline: Timestamp?): Long? {
+    val deadlineMs = payDeadline?.ms?.takeIf { it > 0 } ?: return null
+    var now by remember { mutableLongStateOf(System.currentTimeMillis()) }
+    val remaining = deadlineMs - now
+    LaunchedEffect(now) {
+        if (remaining > 0) {
+            delay(if (remaining > TIME_TO_PAY_WARNING_MS) remaining - TIME_TO_PAY_WARNING_MS else 1000L)
+            now = System.currentTimeMillis()
+        }
+    }
+    return if (remaining > TIME_TO_PAY_WARNING_MS) null else remaining.coerceAtLeast(0)
+}
+
+@Composable
+private fun TimeToPay(remainingMs: Long) {
+    val seconds = (remainingMs + 999) / 1000
+    Text(
+        modifier = Modifier.padding(bottom = 3.dp),
+        text = stringResource(
+            R.string.payment_time_to_pay,
+            "%d:%02d".format(seconds / 60, seconds % 60),
+        ),
+        style = MaterialTheme.typography.labelLarge,
+    )
+}
+
 @Composable
 fun MerchantSection(
     contractTerms: ContractTerms,
diff --git a/wallet/src/main/res/values/strings.xml b/wallet/src/main/res/values/strings.xml
index 89750709..77b6b67c 100644
--- a/wallet/src/main/res/values/strings.xml
+++ b/wallet/src/main/res/values/strings.xml
@@ -320,6 +320,7 @@ GNU Taler is immune to many types of fraud such as credit card data theft, phish
     <string name="payment_tokens_unexpected">Unexpected merchant %1$s, your token could be stolen.</string>
     <string name="payment_tokens_untrusted">Merchant %1$s is untrusted, cannot spend this token.</string>
     <string name="payment_template_error">Error creating order</string>
+    <string name="payment_time_to_pay">Time to pay: %1$s</string>
     <string name="payment_title">Payment</string>
 
     <!-- P2P receive -->